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(astronomy) A comet, cataloged as “C/1999 S4”, discovered on September 27, 1999, by the Lincoln Near-Earth Asteroid Research program in New Mexico. (See https://web.archive.org/web/20051220100856/http://www.windows.ucar.edu/tour/link=/comets/linear.html) Sometimes spelled LINEAR.

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Linear

Linear passed perihelion last month and put on a spectacular display for backyard astronomers.

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Linear passed perihelion last month and put on a spectacular display for backyard astronomers.

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